Hi all

1 : True or False and why ? : Equation X = a defines a function with independent variable X ?

2 : what the vertex of the parabola y= 1/2(x+3)^2 + 8 is ?

3 - the graph of exponential function f(x) = b^x where b>0 and b dont = 1 will pass through :

a) - (0,0) b) - (1,1 ) c) - ( 0,1 ) d) - (0,1)

I don't want the answer only also I need to explain the solving

thanks